Experimental study on mean overtopping of sloping seawall under oblique irregular waves

Abstract

In this paper, domestic and abroad research progresses and related calculation formulae of the mean overtopping discharge are summarized. Through integral physical model experiments, the relation between the wave direction and the overtopping discharge on the top of the sloping dike is focused on and put into analysis and discussion; and a modified formula for mean overtopping discharges under oblique irregular waves is proposed. The study shows that the mean overtopping discharge generally goes down as the relative wave obliquity β increases for a fixed measurement point and the mean overtopping discharge generally increases as the wave steepness H/L decreases (the cycle increases) for a fixed relative wave obliquity.

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Correspondence to Deng-ting Wang.

Additional information

Foundation item: The project was financially supported by the National Key Research and Development Program of China (Grant Nos. 2016YFC1402000 and 2016YFC1402002), the Special Funds Targeting at Industrial Scientific Researches for Public Welfare of Ministry of Water Resources (MWR) (Grant No. 201401004), the National Natural Science Foundation of China (Grant No. 51579156), the Major Project of Nanjing Hydraulic Research Institute Funds (Grant No. Y214009), the Jiangsu Province Hydraulic Science and Technology Projects (Grant No. 2012001-8), and the Jiangsu Province Hydraulic Science and Technology Projects (Grant No. 2014048).

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Wang, D., Ju, L., Zhu, J. et al. Experimental study on mean overtopping of sloping seawall under oblique irregular waves. China Ocean Eng 31, 350–356 (2017). https://doi.org/10.1007/s13344-017-0041-2

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Key words

  • mean overtopping discharge
  • oblique wave
  • sloping dike